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The RTQ2539A is a high-current (3A), low-noise (6.8μV<sub>RMS</sub>), high accuracy (1% over line, load, and temperature), low-dropout linear regulator (LDO) capable of sourcing 3A with extremely low dropout (max. 130mV). The device supports single input supply voltage as low to 1.1V, which makes it easy to use.<br /><br />The low-noise, high PSRR and high output current capability makes the RTQ2539A ideal to power noise-sensitive devices such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF components. With very high accuracy, remote sensing, and soft-start capabilities to reduce inrush current, the RTQ2539A is ideal for powering digital loads such as FPGAs, DSPs, and ASICs.<br /><br />The external enable control and power good indicator function make the control sequence easier. The output noise immunity is enhanced by adding external bypass capacitor on the NR/SS pin. The device is fully specified over the temperature range of T<sub>J</sub> = -40°C to 125°C and is offered in a WQFN-12L 2.2x2.5 (FC) package.
RTQ2539A Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Input Voltage Range : 1.1V to 6.5V </li><li>Output Voltage Range : 0.8 V to 5.5V </li><li>Accurate Output Voltage Accuracy (1%) Over Line, Load and Temperature </li><li>Ultra High PSRR : 40dB at 500kHz </li><li>Excellent Noise Immunity <ul class="lv2"> <li></li><li>6.8μV<sub>RMS</sub> at 0.8V Output </li><li>10μV<sub>RMS</sub> at 3.3V Output </li></ul> </li><li>Ultra Low Dropout Voltage : 130mV at 3A </li><li>Enable Control </li><li>Programmable Soft-Start Output </li><li>Stable with a 47μF or Larger Ceramic Output Capacitor </li><li>Support Power-Good Indicator Function </li><li>RoHS Compliant and Halogen Free </li><li>Junction Temperature Range : -40°C to 125°C </li></ul></div>
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RTQ2539A Ordering Information
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<div class="spec-list"><ul class="lv1"><li>Portable Electronic Devices </li><li>Wireless Infrastructures : SerDes, FPGA, DSP </li><li>RF, IF Components : VCO, ADC, DAC, LVDS </li></ul></div>
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